Patent US2559564A successfully refreshed from Google Patents.
US2559564A
Expired / Lapsed
US
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Pneumatic and air sweep closure
Assignee: Individual
•
Filing: 1945-09-10
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Granted: 1951-07-03
•
Expires: 1965-09-10
Abstract
No abstract record available.
Inventors
- 👤 Curren C Sperling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:31
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/202; Y; Y10; Y10S; Y10S277/00; Y10S277/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189617795A
Cited
US958421A
Cited
US1221733A
Cited
US1826941A
Cited
US1636243A
Cited
US1710439A
Cited
GB413364A
Cited
US2355658A
Cited
US2342616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |